Half to the craighead



(No Model.)

J. KINTZ.

ELECTRIC LIGHT FIXTURE.

No. 447,832. Patented M31. 10,1891.

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' UNITED STATES ATENT FFICE.

JOSEPH KINTZ, OE BALLARD VALE, MASSACHUSETTS, ASSIGN OR OF ONE- HALF TOTHE ORAIGHEAD d: KINTZ COMPANY, OF NEYV YORK, N. Y.

ELECTRIC-LIG HT FIXTURE.

SPECIFICATION forming part of Letters Patent No. 47,832, dated March 10,1891;

Application filed May 15, 1890- Serial No. 351,868. (No model.)

To all whom it may concern.-

Be it known that I, JOSEPH KINTZ, of Ballard Vale, in the county ofEssex and State of Massachusetts, have invented a certain new and usefulImprovement in Electric-Light Fixtures, of which the following is aspecification.

I will describe a fixture embodying my improvement, and then point outthe novel features in the claims.

In the accompanying drawings, Figure 1 is a central longitudinal sectionof an electric- .light fixture embodying my improvement.

Fig. 2 is an end view of the main part or upper section. Fig. 3 is anend View of an arm or secondary part. Fig. 4 is a bottom View of the twoparts or sections detached.

Similar letters of reference designate corresponding parts in all thefigures.

A designates the main part or upper section. It consists of a plate a,having a forwardly-extending hollow projection a and a nipple or socketa projecting from the latter. This part may be secured in any suitablemanner to a wall or any other supportas, for instance, by screws passingthrough holes a in the plate a. The projection a is shown as ofrectangular form and as cast integral with the plate a. The nipple orsocket a maybe made separately and provided with a shank having anexternal screw-thread and fitting in and engaging a tapped hole in theforward part of the projection a. In the back of the nipple or socket aa block a, of wood or like material, is inserted. Preferably it will bedriven tightly into place, or it may be secured in position in anydesirable manner. A pin a extending longitudinally into the nipple orsocket and block, acts as a key, preventing the rotation of the blockindependently of the nipple or socket.

a a designate two electrodes extending longitudinally through the blocka As here shown, these electrodes consist of wires driven into the blockside by side, and having at the rear end eyes, with which wires a a,forming part of an electric circuit,'are connected. At the front endthese electrodes project slightly beyond the block.

13 designates an arm or secondary section of the electric fixture. It ismade in the form of a tube constructed at one end to fit the nipple orsocket a and provided at the other end with a nipple b, to which anelectric lamp may be fastened. The end which enters the nipple or socketa is provided with a block b, of wood or like material. Preferably thiswill be driven into place. As shown, it has a notched flange-likeportion projecting beyond the main portion of the part or section B. Thepart or section B has, however, alug 11 which extends into a notch inthe flangelike portion of the block, interlocking therewith, so as toprevent any rotary movement of the block. Electrodes b b are inserted inthe block b in positions corresponding to the electrodes a a They maybemade like the electrodes to a and inserted to project slightly beyondthe protruding end of the block. WVires a (0 may be engaged with themand extended through the part B to its nipple b for connection with alamp.

Around the part B, near the end which engages with the socket, is acircumferential rib b which maybe formed upon or attached to the part inany suitable manner. When the end ofthe part B is inserted in the nippleor socket, this rib will be close to the outer extremity of the nippleor socket. The electrodes b b will then bear against the electrodes a QThe part B is also provided with a longitudinal rib b. 'This willproject into a notch a with which the nipple or socket is provided, andwill thereby preclude any rotary movement of the part B relatively tothe part A.

C designates a coupling-piece, consisting of a ring surrounding the partB forward of its rib b and having an internally-screwthreaded flangewhich will extend over the said rib and engage with theexternally-screwthreaded forward outer end of the nipple or socket 19When the two parts AandB are fitted together, the rib b will interlockwith the notcha and insure a proper meeting of the two pairs ofelectrodes, and the coupling-piece will maintain an efficient contactbetween them. The projection of the electrodes 19 b willbe such thatwhen the coupling-piece is engaged these electrodes will be forced intocontact with the electrodes at a before the circumferential rib b on thepart B will reach the opposite end of the nipple or socket a and alsobefore the extremity of the longitudinal rib b can reach the bottom orinner end or the notch a in the nipple or couplingpiece.

By my improvement I produce a very simple electric fixture which mayreadilyhave its sections separated and reunited in proper relation.

WVhat I claim as my invention, and desire to secure by Letters Patent,is

. 1. In an electric fixture, the combination of a main part or sectionprovided with a nipple, a plug inserted in the back part of the nipple,electrodes fitted in said plug and protruding from the forward end ofthe plug, a secondary part or section made in the form of a tube, a plugfitting in the inner end of said secondary part and having a flange-likeportion lapping over said end of the secondary part and a notch in saidflange, a rib or tongue on the secondary part entering the notch of theflange, electrodes in the last said plug, and a coupling-piece connectedwith the one part and engaging with the other, substantially asspecified.

. 2. In an electric fixture, the combination of a main part or sectioncomposed of a platelike portion having a hollow forward or out Wardprojection and a nipple inserted in said projection andconstructed so asto be open at both ends, a plug inserted at the back end of said nipple,electrodes arranged in said plug, a secondary part or section made inthe form of a tube of a size to enter the outer end of the nipple, aplug in said secondary section, electrodes in said plug, and acouplingpiece connected with the one part and engag ing With the other,substantially as specified. 4o

JOSEPH KINTZ. \Vitnesses:

HARRY R. Dow, JOHN P. SWEENEY.

